HEARING APPARATUS FOR HYPOACUSIC AND DEAF PERSONS WITH LEFTOVERS OF NEUROSENSORY SENSITIVITY

• Main Authors: KOCHERGIN A.V, KOLIGAEV O.A, NAKORJAKOV P.V
• Format: Patent
• Language: English; Russian
• Published: 20.11.2000
• Edition: 7
• Subjects: BANDAGES, DRESSINGS OR ABSORBENT PADS; DEAF-AID SETS; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; FILTERS IMPLANTABLE INTO BLOOD VESSELS; FIRST-AID KITS; FOMENTATION; HUMAN NECESSITIES; HYGIENE; LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS; MEDICAL OR VETERINARY SCIENCE; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; PROSTHESES; PUBLIC ADDRESS SYSTEMS; TREATMENT OR PROTECTION OF EYES OR EARS

surdology, in particular hearing apparatuses. SUBSTANCE: the hearing apparatus has a microphone whose signal is amplified by a preamplifier having negative feedback circuits for expansion of the dynamic range and bringing of its characteristic to conformity with the biological characteristics of the acoustic analyzer of a healthy man. An analog-to- digital converter then transmits the signal in a digital form to a special processor or personal computer, where it is processed by a special algorithm making it possible to transform the signal to that region of frequencies where there is a residual sensitivity of the acoustic analyzer of a sick man. After transformation the signal is fed via a digital-to-analog converter and a volume control to an output amplifier and from it to a microtelephone. EFFECT: enhanced comfort of perception of surrounding sounds, essentially entranced legibility of speech both in the near and the apparatus, practically excluded influence of the apparatus on further worsening of hearing. 1 cl, 1 dwg